Skip to main content

IRONWOOD INVESTMENT MANAGEMENT LLC

Position in ASPN — Aspen Aerogels Inc

CIK 1127761 BOSTON, MA

Position in ASPN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,136,768
+$566,839 QoQ
Shares Held
179,301
+7.6% QoQ
Ownership
0.216%
of shares outstanding
% of Portfolio
0.51%
of 13F equity value
Holder Rank
#48
of 178 holders
Holding Since
Jun 2025
5 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ASPN Over Time

Shares Held

Position Value (USD)

Position in Specialty Chemicals

Basic Materials · as of Jun 30, 2026

IRONWOOD INVESTMENT MANAGEMENT LLC holds $5,626,131 across 4 Specialty Chemicals names. ASPN ranks #3 (20.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 ASPN
Aspen Aerogels Inc
This page
179,301 $1,136,768

All Filings in ASPN

Export CSV
5 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,136,768 179,301
2026-03-31 $569,929 166,646
2025-12-31 $360,711 127,460
2025-09-30 $935,159 134,362
2025-06-30 $735,998 124,324